Flora of North America species comparison

usually 1–3, ascending to erect, scabrous to loosely puberulent.

1–5(–10), ascending to erect (tall stems sometimes arching), branching proximal to arrays only in damaged stems, glabrous.

basal and proximal usually withering by flowering, tapering to long-winged petioles, blades oblanceolate, 30–100 × 7–20(–30) mm, margins serrate or crenate, mid usually largest, apices acute to obtuse, acuminate, faces scabrous;

mid and distal cauline subsessile (1 mm) or sessile, blades (sometimes ± shiny) elliptic to oblanceolate, 10–50 × 5–15(–25) mm, greatly reduced distally, grading into bracts, firm, bases convex-cuneate to rounded, margins finely serrate, often 3-nerved, nerves usually distinct abaxially, faces distinctly scabrous.

basal subsessile to winged-petiolate, petioles of proximalmost nearly completely sheathing stems, blades oblanceolate to elliptic-lanceolate, 60–600 × 3–20(–50) mm, thick and firm, obtuse to rounded, bases tapering, margins entire or obscurely serrate, glabrous;

proximal to distal cauline sessile, ascending to nearly appressed, lanceolate-oblong to linear, 10–30 × 2–4 mm, abruptly reduced proximally, then gradually so distally, margins entire, apices acute, faces glabrous.

0.5–2 mm;

bracteoles 1–5, linear-lanceolate to ovate, minute, grading into phyllaries distally.

slender, 2–10 mm, glabrous or sparsely strigillose;

bracteoles linear.

narrowly campanulate, 3–5 mm.

narrowly campanulate, 4–6 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

3–7, 1.5–2 × ca. 0.5 mm.

4–6;

corollas 3 mm, lobes 1 mm.

usually 8–12;

corollas 3–5 mm, lobes 1–1.2 mm.

in 3–4 series, unequal, oblong, midnerves swollen distally, obtuse or acute to slightly acuminate.

in 3–4 series, oblong, unequal, acute to rounded, glabrous.

20–260, in paniculiform arrays, narrowly to broadly secund, pyramidal, branches recurved, secund.

15–250, sometimes secund on proximal branches and secund terminus, in linear, narrowly elongate paniculiform to elongate pyramidal-secund or thyrsiform-paniculiform and not secund arrays, sometimes with a few elongate proximal, arching branches.

1.5–2.5 mm, sparsely to moderately short-strigose;

pappi 3 mm.

1.5–2.5 mm, sparsely to moderately strigose;

pappi 3 mm.

= 18, 36.